.icon{
    border: 1px solid red;
     width: 100px;
     height: 100px;
     background: url(../img/icon.jpg)no-repeat;
     }
    .icon1 {
         background-position:-70px -60px
     }
     .icon2 {
         background-position:-198px -69px
     }
      #demo{
          color: red
      }
         .icon3 {
             background-position:-580px -188px
         }
         .icon4 {
             background-position:-963px -445px
         }    